Interesting, What are you working on? Wonder if someone makes a lighter weight 9" (8.8) rear end for the car. Does anyone know? all I could find is some aluminum covers which would be negligible in weight.
I know one of the racing teams tried swapping to the lighter aluminum housing and within a few runs snapped the extended mounting ear right off it. I had just purchased a 3.31 to swap my 3.73 out with during 1/2 mile shootouts for top end, and happened to weigh it cause if felt pretty damn heavy.
It should weigh as much as your stock cast iron diff with 3.73s.,
Sorry if I'm going off topic but what kind of #'s were you getting with the 3.73 for speed? have you tried the 3.31's yet? do you have a thread on it? I'd be interested in reading it.
They weight a lot, far too much, I'd say at least around 20/25 lbs each, I've swapped them for Corbeau buckets and I believe I've drop about 50lbs of comfy crap from the car, the rear seats instead are lighter then I thought, I've dropped them too anyway.
they weight 51.4 pounds each the driver/passenger.
It's pretty simple, the premium seats weigh more.
Im pretty sure I read somewhere that the recaros are around 25lbs, and the premium heater/cooled seats are 50lbs. swapping to recaros would save you 50lbs total
Here we go, also saw a post of the passenger cloth base seat weighing 51.4 lbs
